1. Android Developer Fundamentals V2
Build your first app
Lesson 1

2. 1.0 Introduction to Android

3. Contents Android is an ecosystem Android platform architecture
Android Versions
Challenges of Android app development
App fundamentals

4. What is Android? Mobile operating system based on Linux kernel
User Interface for touch screens
Used on over 80% of all smartphones
Powers devices such as watches, TVs, and cars
Over 2 Million Android apps in Google Play store
Highly customizable for devices / by vendors
Open source

5. Android user interaction
Touch gestures: swiping, tapping, pinching
Virtual keyboard for characters, numbers, and emoji
Support for Bluetooth, USB controllers and peripherals

6. Android and sensors Sensors can discover user action and respond
Device contents rotate as needed
Walking adjusts position on map
GPS & wifi tracking
Games

7. Android home screen Launcher icons for apps
Self-updating widgets for live content
Can be multiple pages
Folders to organize apps

8. Android app examples
Pandora
Pokemon GO
Facebook Messenger

9. Android Studio Official Android IDE
Develop, run, debug, test, and package apps
Monitors and performance tools
Virtual devices
Project views
Visual layout editor

10. Google Play store Publish apps through Google Play store:
Official app store for Android
Digital distribution service operated by Google

11. Android Platform Architecture

12. Android stack System and user apps Android OS API in Java framework
Expose native APIs; run apps
Expose device hardware capabilities
Linux Kernel

13. Older Android versions
Codename
Version
Released
API Level
Honeycomb
Feb 2011
Ice Cream Sandwich
Oct 2011
Jelly Bean
July 2012
KitKat
Oct 2013
Lollipop
Nov 2014
There were earlier versions before Feb 2011.

14. Newer Android versions
Codename
Version
Released
API Level
Marshmallow
Oct 2015 23
Nougat
Sept 2016
Oreo
Sept 2017
Pie
9.0
Aug 2018 28
There were earlier versions before Feb 2011.

15. App Development

16. What is an Android app? One or more interactive screens
Written using Java Programming Language and XML
Uses the Android Software Development Kit (SDK)
Uses Android libraries and Android Application Framework
Executed by Android Runtime Virtual machine (ART)

17. Challenges of Android development
Multiple screen sizes and resolutions
Performance: make your apps responsive and smooth
Security: keep source code and user data safe
Compatibility: run well on older platform versions
Marketing: understand the market and your users

18. App building blocks
Resources: layouts, images, strings, colors as XML and media files
Components: activities, services, and helper classes as Java code
Manifest: information about app for the runtime
Build configuration: APK versions in Gradle config files

19. The development process

20. END